Joel:
My understanding is that you wish to calculate inter-row spacing for
non-south facing arrays. I modeled an example of this scenario in 3D over
a time period and created a video file. I converted the aforementioned 97
MB file to a WMV and trimmed the file size just a little (to ~436 KB). The
file can be found
at: http://millersolar.com/case_studies/case_studies.html Click on
Shading Study.
I modeled two identical, two row installations. One is facing due south,
one is 45 degrees east of south. The modeling date is winter solstice and
the time period is from 8:00 AM to 4:00 PM. The location is right here in
sunny San Luis Obispo County.
If you get a chance to view the animation, you will note that the inter-row
shading is not significantly different between the south facing rows and
the non-south facing rows. One might even decide that the solution for a
south facing installation is an adequate solution for any installation
where all other parameters are equal. I will verify this mathematically
(in my free time).
Thanks for the question. I love thinking about these problems. (Tell the
kids that the math is actually useful.)
William Miller
PS: The animation was created in Microstation, saved as an AVI and
converted to a WMV file in Pinnacle Studio. I apologize that the
resolution is not great -- I am still learning the software, even after all
these years.
Wm
At 06:28 PM 5/11/2009, you wrote:
Ken,
Thank you. This website and software gives the sun altitude and azimuth. I
seem to recall 3D graphic dynamic software where you input the site
longitude and latitude, solar panel tilt angle and the north side height
and the result would be a shade pattern shown for each hour. Does anyone
have such a program?
Best regards,
Joel Davidson
----- Original Message -----
From: <mailto:[email protected]>Engineering Services Co.
To: <mailto:[email protected]>RE-wrenches
Sent: Monday, May 11, 2009 11:14 AM
Subject: Re: [RE-wrenches] Spacing between solar arrays
Try this Joel.
<http://www.susdesign.com/>http://www.susdesign.com/
Ken Hulet
Engineering Services Co.
204 S. Main St.
Blanchardville, WI 53516
608.523.3726
<http://www.revolutionearth.com>http://www.revolutionearth.com
visit us at River Valley Trading Co.
<http://www.rivervalleytrading.com>http://www.rivervalleytrading.com
On May 11, 2009, at 11:39 AM, Joel Davidson wrote:
Wrenches,
Someone posted a website or calculation for determining the spacing
between solar arrays, but I can not find it. It is easy to get the
spacing from a drawing when the array faces true south, but when the
array faces southeast or southwest is what we need to know. Please help.
Thank you very much.
Joel Davidson
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